Dear Two Horses,
First draft of a non- linear project is always tough. You can’t follow the typical plot outline of get someone up a tree, higher , out on a limb, cut the limb, etc, except maybe symbolically. I find that writing out a very simple outline of what I have makes it clear to me, and I can move things around. After that, the outline is almost no help–I forget what’s in it– but making it is very helpful.